Top burner assembly for gas stove



Aug. 2l, 1956 A. H. CRONE TOP BURNER ASSEMBLY FOR GAS STOVE Filed July 27, 1951' 2 Sheets-Sheet 1 Aug. 21, 1956 A. H. cRoNE TOP BURNER ASSEMBLY FOR GAS STOVE 2 Sheets-Sheet 2 Filed July 27, 1951 17u/enfer MW /Orneys 2,759,471 Patented Aug. 21, 1.956

2,759,471 TOP BURNER ASSEMBLY FOR A'GAS STOVE Albert H. Crone, Rockford, lll., :assignor to iGeo. D. Roper Corporation, Rockford, "111., a corporation of Illinois Application July 2.7, 1951,-Seria'lNo. l238,919 9 Claims. (Cl. 126-39) This invention relates to a top burner assembly for a gas stove.

It is an object of this invention to .provide a novel burner and mixer tube which is adapted for .use .at any top burner location on a gas stove .and -which is readily removable from the stove with a minimum of disassembly of the other stove parts.

Another object of this invention is to physically support a top burner of agas stove ina novel manner which improves the transfer of heat from the burner to the cooking pan.

A further object of this invention is to provide a top burner for a gas stove having positive .means .for insuring a definite spacing between the .burner llame ports and a cooking pan mounted above the'burner.

Another object of this invention is to provide a novel top burner assembly for a gas stove in which the burner is Suspended from the grate, and in .which grate rattle is minimized.

A still further object of lthis invention is topositively locate at predetermined positions relative to .one another a top burner of a gas stove and the adjacent .end -of the ash tube which provides ignition for -the `top burner, so yas to maintain .the top burner atxall .times .in igniting relation to the llashtube.

Other and further objectsand advantages of the invention will be `apparent from the following description of a preferred form thereof.

In the drawings:

Figure 1 is a fragmentary top .view of a Vstove :incorporating the present invention.

Fig. 2 is a vertical sectional view lofa portion'of the stove construction of Fig. 1.

Fig. 3 is a top view of .the bracket .forlocating -tlie .top burner and for supporting .the adjacent end of the yliash tube by which the top burneris ignited.

Fig. 4 is a top view of apilotburner,.the-Hash tubes extending from the pilot burner, and the supporting brackets for the ends'of .the flash tubes remote from-the Vpilot burner.

Fig. 5 is a front view, partlyin section, of the Fig. v4 assembly.

Fig. 6 is a vertical section of the simmerfburner and vertical mixer therefor according to the presentinvention.

Fig. 7 is a longitudinal section of the:l grate.

Fig. 8 is a top viewof the main burner .portion of the top burner 'according to the presentfinvention.

Fig. 9 is an end view, Apartly in section, of the main burner of Fig. 8.

In the drawings, the vtop burners, indicated generally at 1, are shown as being locatedin'staggered relation at the top 2 of a gas stove. Between twoofzthe top burners a pilot yburner 3 -is located, .below'the stove top `2. Gas

is supplied to the pilot burner through a :conduit 4 connected to a gas manifold. Horizontal flash ytubes Sand 6 extend outward from the pilot burner 3 to adjacent the respective top burners'for-ignitingthe latterfromthe pilot burner. Each-of the topiburners inthe illustrated embodiment of the invention is of -the :two-way type,

including a mainfhurner 7 and a sim-mer burner -8.

As best seen in Fig. 6, the-simmerburner includes a 'hollow bulb 9 provided with a plurality :of upwardly t horizontally.

extending arcuate llame ports 10. At its lower .end the burner bulb 9 is supported on a hollow vertical mixer tube 11, which has a Venturi shaped interior conduit 12 along its length. At its lower end the mixer tube is formed with a tubular portion 11a having a .pair of diametrically opposed air inlet ports 14. A tubular sheet metal member 15 snugly engages the periphery .of .the tubular portion 11a and is formed with diametrically disposed holes V16 adapted to register, in whole or in part, with .the ports 14 to permit the entry of the desired amount of air into the simmer burner mixer tube. An adjustable screw 17 threadedly secured to the mixer tube engages in a horizontal peripheral slot 18 in the tubular member 15 to permit adjustment of the holes 16 relative to the holes 14, for controlling the amount of air enter- .ing the simmer burner mixer, and 'for clamping the tubular .member 15 rigidly to the mixer when the desired adjust- Ato the flash tube, as will appear hereinafter.

For physically supporting and locating the simmer Yburner a generally U-shaped bracket assembly, indicated kgenerally at Z3, is provided. This bracket .at its lower end carries a vertically extending spud 24 which extends `upwardly through the hole 20 into the mixer tube y11 to supply gas thereto. A'conduit-ZSYconnected tothe manu- -allyoperated main shut-olf valve for the top burner communicates with the simmer burner spud to furnish gas thereto. The lower arm -26 of the bracket is suitably secured, as vby a screw 27, to the lower Wall 28 of the burner box to be supported thereby. Spaced lugs 29a and 29!) formed lon the lower bracket arm 26 :extend through corresponding vholes in the bottom 28 ofthe burner box to locate the bracket 23 ,properly with respect Vto the corresponding burner hole in the stove top.

An L-shaped arm '.29 vof the bracket extends upwardly and at its upper end supports a pair'of identical horizontal arms 30 for supporting the flash-tube.

The flash tube assembly is of integral cast iron construction and includes acentral ring portion 31 disposed -around the pilot burner -tube 32. A depending curved rib 33 carries a central ring 34 for llocating the pilot burner tube'centrally ioffthe ilashtube ring 31. Onveither side ofthe ring 31 isa cylindrical lflash tub 35 extends Integral with the free end of each ash tubeare a pair of transverse horizontalarms 36. These arms are formed ywith apertures 37 adapted to be aligned Vwith threaded apertures 38 formed in the top face of each of the respective bracket-arms 30. Screws 40 serve to clamp the arms 36 and 30 together so that the bracket 23 physically supports the flash `tube lin the desired manner.

Spaced horizontal arms 41 extend outwardly in `parallel relation from the arms 36 and are joined at their free ends by a ring-42 tovform a simmerburner support member. Diametrically opposed channels 43 are formed fin the upper face of ring '42, and a vertical channelv44 is formed in the inner face of the ring intermediate the channels 43.

The simmer burner mixer tube V1-1 is formed with youtwardly protruding, diametrically opposed horizontal -ward through ring 42 with lugs 45 'resting'on 'the/horizontal channels 43 and lugs 146 seated inthe vertical channel'44. 'In thiszposition of the simmerburnerfmixer ...a 11 its charging port 22 discharges a jet of combustible air-gas mixture into the open free end of the flash tube to be ignited by the pilot burner and flash back to ignite the main air-gas stream in the internal conduit 12 passing to the simmer burner head 9.

Thus, it will be seen that the bracket 23 physically supports the flash tube at one end and positively locates the simmer burner mixer at the desired height and angular relationship with respect to the ilash tube so as to receive ignition therethrough, as well as physically supporting the simmer burner and its mixer and locating the same in communication with the gas supply.

An identical bracket 23a supports the free end of flash tube 6 and locates the simmer burner 8a relative thereto in the same manner.

The main burner 7 is located in communication with a vertically extending spud 47 attached to the lower bracket arm 26 and communicating through a passage 48 therein with a conduit 49 leading from the manuallyoperated main shut-olf valve for the top burner. The main burner assembly includes a vertically extending mixing tube having a Venturi-shaped passage 50 which branches od toward its Lipper end to provide two separate upwardly-extending passages communicating with an annular horizontal passage 51 extending completely around the main top burner. A plurality of llame ports 52 are formed in the peripheral side wall 53 of the burner head and communicate with the annular passage Sl to discharge gas therefrom. The burner side wall 53 is inclined downwardly and inwardly at an angle of degrees and the flame ports 52 extend at right angles thereto. In this manner the upper portion of the peripheral side wall 53 overhangs the ange ports S2 and prevents spillovers by the cooking pan from entering into the llame ports. A plurality of radial slots 66 are formed in the top wall of the main burner and extend from the radially inner edge of the main burner to a point adjacent the flame ports 22 to provide gas discharge passages for cross igniting the main burner ports from the simmer burner 8.

At its lower end the main burner mixing tube is formed with spaced air holes 79 and carries an apertured tubular member 80 which is adjustable to control the air supply to the main burner in a manner similar to the described arrangement for the simmer burner.

Formed integral with the burner to extend above the top thereof are three horizontal radially-extending ribs 54, 55, 56 which terminate in heads 57, 58, 59 beyond the periphery of the burner. At their extreme outer ends on their lower faces these heads are formed with flat horizontal seating surfaces 6l), 6l, 62.

The stove top 2 at each of its bowl pan portions is formed with an annular downwardly depressed portion 63 forming a flat ledge surrounding each of the holes in the stove top for receiving the burners. Each of the ledges 63 is formed with three evenly spaced holes 64. Each burner bowl 65 is generally dish-shaped in configuration and extends downwardly and inwardly from the ledge 63.

The burner grate includes a ring 69 provided with three evenly spaced radial arms '70 each having an outwardly protruding portion 7l extending above the top face of the ring. The radially inwardly-extending portions of the arms 70 also extend above the top face of the ring and provide horizontal dat surfaces 72 for supporting a cooking pan. Each :of the outer protrusions 71 is formed with a flat lower face 73 which rests on the stove top 2. The outer vertical side wall 74 of ring 69 is adapted to seat snugly against the side wall 75 which joins the stove top 2 and the depressed ledge 63. Depending lugs 76 are formed integral with the ring 69 and extend through the holes 64 to assemble the grate on the stove top.

Intermediate the grate arms 70 there are formed three radial arms 77 which extend inward horizontally in spaced relation above the top face of ring 69. At their inner ends the arms 77 are cut away to form dat horizontal seating surfaces 78. These surfaces 78 form seats for 4- the surfaces 60.62 on the radially extending burner arms 57-59, so that the burner 7 is physically supported by the grate in this manner. From Fig. 2 it will be noted that the dat top surfaces of the top arms Sli-56 on the main burner are on a level with the top surfaces 72 on the grate. Since the cooking pan rests on these surfaces, it will be seen that the top of the main burner directly contacts the cooking pan and heats the latter by conduction, along with the convection heat from the llames at the main burner.

Because the top surfaces of the main burner itself define the level of the bottom of the cooking pan it is also evident that the burner ame ports 52 have a fixed and denite relationship to the pan bottom. This factor is of the utmost importance in obtaining the optimum heating elect from the burner.

Since the main burner is suspended from the grate, the weight of the burner acts to maintain the grate stable and to eliminate grate rattle.

With the novel drop through construction of the top burner according to the present invention, the top burner may be installed at any burner location on the stove top. Since the burner mixers extend vertically there is no problem of shaping the mixers to occupy particular positions on the stove top, front or rear and left or right. Also, the main burner can be removed merely by lifting the associated grate above the stove top. The simmer Iburner can be removed through the burner hole 79 in the bowl pan portion 65 after the main burner has been removed.

While there has been disclosed a preferred form of the present invention it is to be understood that various changes from the specific illustrated form may be resorted to without departing from the spirit and scope of the invention.

I claim:

l. In a top burner assembly for a gas stove, in combination, a horizontal ash tube adapted to communicate at one end with a pilot burner, a support member connected to the flash tube and extending beyond the other end thereof, a bracket supporting said support member and said other end of the ash tube, means for mounting said bracket on a stove, a straight elongated upwardly extending burner mixer formed with a discharge port for receiving ignition through the ash tube from the pilot burner, and means on said burner mixer engaging said support member which extends beyond the ash tube to releasably support said burner mixer thereon and permit axial withdrawal of the mixer from the support member and to align said discharge ignition port o-f the mixer with said other end of the ash tube.

2. In a top burner assembly for a gas stove, in combination, a horizontal flash tube adapted to communicate at -one end with a pilot burner, a support member connected rigidly with the flash tube and extending outward beyond the other end thereof and terminating in a horizontally disposed ring, a bracket connected to said support member to support the latter and said other end of the flash tube, means for mounting said bracket 0n a stove, and a mixer for a burner extending upwardly through said ring `on the support member and formed with a transverse discharge port for receiving ignition through the flash tube from the pilot burner, said mixer being formed with outwardly protruding transverse lugs resting on the top of the ring to support the mixer thereon, and a vertical channel formed in said ring and an outwardly protruding transverse lug formed Aon said mixer snugly seated in said channel to align the discharge ignition port of the mixer with said other end of the flash tube.

3. In a top burner assembly for a gas stove, in combination, a cast iron horizontal flash tube adapted to communicate at one end with a pilot burner, a horizontal support member cast integral with the ilash tube and extending outward beyond the other end thereof and terminating in a horizontally disposed ring, an upwardly ex-tending bracket connected to the bottoni of said support member to support the latter and said other end of the flash tube, means for mounting the bracket on a stove, a cast iron mixer for the simmer burner extending vertically through said ring on the support member and formed with a transverse discharge port for receiving ignition through the flash tube from the pilot burner, said mixer being -formed with integrally cast transverse lugs protruding outwardly to rest on the top o-f the ring to support the mixer thereon, and a vertical channel formed in said ring and an integral cast lug on said mixer protruding outwardly therefrom seated snugly in said channel to align the discharge ignition port of the mixer with said other end of the flash tube.

4. In a top burner assembly for a gas stove, in combination, a horizontal liash tube adapted to communicate at one end with a pilot burner, a support member connected to the flash tube and extending outward beyond the other end thereof, an upwardly extending burner mixer formed with a discharge port for receiving ignition through the ash tube from the pilot burner, said support member which extends beyond the flash tube supporting the burner mixer to align the discharge ignition port thereof with said other end of the fash tube, a bracket formed with an upwardly extending arm sup` pouring said support member and said other end of the flash tube, means for mounting said bracket on a stove, said bracket also being formed with `an integral lower arm, and an upwardly extending burner Spud mounted on said lower arm and supplying gas to said mixer at the lower end thereof.

5. In a top burner assembly for a gas stove, in combination, a horizontal ash tube adapted to communicate at one end with a pilot burner, a support member connected rigidly with the ash :tube and extending outwardly beyond the other end thereof and terminating in a horizontally disposed ring, a mixer for the simmer burner extending upwardly through rthe ring on the support member and formed with a transverse discharge port for receiving ignition through the iiash tube from the pilot burner, said mixer being formed with outwardly protruding transverse 'lugs resting on top of the ring to support the mixer thereon, said ring being formed with a vertical channel and said mixer being formed with an voutwardly protruding transverse lug snugly .seated in said channel to align `the discharge ignition pont of the mixer with said other end of the flash tube, an integral bracket including an upwardly extending arm lconnected to said support member at the bottom Ithereof to support the lat-ter and said other end of the ash tube and including a horizontal lower arm, means for mounting said bracket on a stove, and an upwardly extending burner spud carried on said lower bracket arm supplying gas to the mixer at the lower end thereof.

6. A top burner assembly on a gas stove comprising an annular main burner having a plurality of main burner ports, a mixer for said main burner depending therefrom eccentrically of the axis of said main burner and having the lower end thereof laterally offset from the axis of the main burner, a simmer burner separate from the main burner, Ia straight elongated mixer for said simmer burner extending axially thereof, bracket means on the stove for detachably supporting said simmer burner and mixer :coaxially of said main burner, rst and second upwardly extending burner spuds mounted on said bracket means to extend respectively into the lower ends of the mixer on the simmer burner and the mixer on the main burner, the mixer on said simmer burner having a discharge port therein, a ash tube adapted to communicate at one end with a pilot burner, and means on said bracket means for supporting the other end of said ash tube in alignment with said discharge port to receive ignition through said flash tube and effect ignition of said simmer burner, said main burner having a gas discharge passage formed therein and extending from the radially inner edge thereof to a point adjacent the main burner ports to produce a gas stream for igniting the main burner ports from said simmer burner.

7. The combination of claim 6 wherein said main burner overlies the simmer burner, and means for removably suspending the main burner on the stove top.

8. In a top burner assembly on a gas stove, the combination of a top burner grate adapted to be supported on the stove top, an annular main burner suspended from s-aid grate and having a mixer depending therefrom eccentricaliy of the axis of the main burner with the lower end of the mixer laterally offset from the axis of the main burner, a bracket attached to the stove and having a burner spud thereon extending into the lower end of the mixer, a second burner Spud on said bracket disposed in axial alignment with said main burner, a simmer burner having an elongated mixer extending axially therefrom, said mixer for the simmer burner having a discharge port therein, a ash tube, an upwardly extending arm on said bracket, means on said arm for supporting one end of the ilash tube and for supporting the simmer burner concentric of said main burner with the discharge port in the simmer burner aligned with said flash tube to receive ignition through said flash tube and elect ignition ofthe simmer burner, said main burner having a gas discharge passage therein extending from the radially inner edge thereof to a point adjacent the main burner ports for igniting the latter from said simmer burner.

9. In a top burner assembly on la gas stove, in combination, a burner grate supported on the stove top and ncluding a plurality of inwardly extending arms, an annular main burner having a plurality of annularly spaced main burner ports and provided with projecting portions connected at its upper side resting directly on said grate arms to suspend the main burner from the grate, a mixer depending from the main burner eccentrically of the axis thereof fand having :a fuel passage communicating therewith, a horizontal flash tube adapted to communicate at one end with a pilot burner, a support member connected to the flash tube and extending beyond the other end thereof, a bracket formed wth an upwardly extending arm connected to said support member to support the latter and the other end of said ash tube, a simmer burner, a mixer depending from the simmer burner and formed with a transverse discharge port, said support member which extends beyond the flash tube supporting said simmer burner with the discharge port thereof aligned with the flash tube to receive ignition through the ash tube and effect ignition of the simmer burner, said bracket also being formed with a lower horizontal arm, an upwardly extending burner spud carried on said lower bracket arm communicating with the mixer for the simmer burner at the lower end thereof to supply gas to the simmer burner, means mounting said bracket on the stove to position said simmer burner axially of said main burner, and a second upwardly extending burner spud carried on said lower bracket arm communicating with the mixer for the main burner at the lower end thereof to supply gas to the main burner, said main burner having a gas discharge passage formed therein and extending from the radially inner edge thereof to a point adjacent the main burner ports for igniting the latter from said simmer burner.

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